Identifiersflags: g

MongoDB ObjectId

Match MongoDB ObjectId values — 24-character hexadecimal strings.

Try it in RegexPro →

Available in

JSSupported

JavaScript / ECMAScript

Browser-native RegExp. Default if you don't pick.

PYSupported

Python (re)

CPython stdlib `re`. Unicode-aware `\w` and `\d` by default.

GOSupported

Go (RE2)

Linear-time matching. No backreferences or lookarounds.

Pattern

regexengine-agnostic
\b[0-9a-fA-F]{24}\b   (flags: g)

Raw source: \b[0-9a-fA-F]{24}\b

How it works

Word-bounded exactly 24 hex digits. Case-insensitive character class covers both upper and lower case forms produced by different drivers.

Examples

Input

507f1f77bcf86cd799439011

Matches

  • 507f1f77bcf86cd799439011

Input

id: 5f8d0d55b54764421b7156c4

Matches

  • 5f8d0d55b54764421b7156c4

Input

not an objectid

No match

—

Common use cases

  • •API log parsing for Mongo-backed services
  • •Database migration scripts
  • •Query parameter validation
  • •Cross-service correlation tracing

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